ООП. Супермаркет.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.NetworkInformation;
using System.Runtime.CompilerServices;

namespace iJunior
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            SuperMarket superMarket = new SuperMarket();

            superMarket.ReceivCustomers();
        }
    }

    class SuperMarket
    {
        private List<Product> _products = new List<Product>();
        private Random _random = new Random();
        private Queue<Client> _clients = new Queue<Client>();
        private int _money = 0;

        public SuperMarket()
        {
            _products.Add(new Product("Сыр", 149));
            _products.Add(new Product("Колбаса", 239));
            _products.Add(new Product("Хлеб", 99));
            _products.Add(new Product("Молоко", 89));
            _products.Add(new Product("Яйца", 119));
            _products.Add(new Product("Картофель 1кг", 78));
            _products.Add(new Product("Шоколад", 129));
            _products.Add(new Product("Лимонад", 119));
            _products.Add(new Product("Печенье", 47));
            _products.Add(new Product("Мясо", 339));
            _products.Add(new Product("Гречка", 79));
            _products.Add(new Product("Макароны", 79));
        }

        public void ReceivCustomers()
        {
            AddQueueClients();
            ServeClients(_clients);
        }


        private void ServeClients(Queue<Client> clients)
        {
            bool isQueueServed = true;
            int customerNumber = 1;

            while (isQueueServed)
            {
                Client client = clients.Dequeue();
                Console.WriteLine($"Покупатель {customerNumber})");

                for (int i = 0; i < client.NumbersOfItemsInBasket; i++)
                {
                    SellProducts(client.TakeRandomProduct(), client);
                }

                if (clients.Count() == 0)
                {
                    Console.WriteLine("Все посетители обслужены");
                    isQueueServed = false;
                    Console.ReadKey();
                }

                Console.WriteLine();
                customerNumber++;
            }
        }

        private void AddQueueClients()
        {
            int minClients = 5;
            int maxClients = 15;
            int clientsInQueue = _random.Next(minClients, maxClients);

            for (int i = 0; i < clientsInQueue; i++)
            {
                Client client = new Client(_products);
                _clients.Enqueue(client);
            }
        }

        private void Sell(Product product, Client client)
        {
            Console.WriteLine($"Продано {product.Name} по цене {product.Cost}");

            client.BuyProduct(product);

            _money += product.Cost;

            Console.ReadKey();
        }

        private bool CheckEnoughCLientMoney(Product product, Client client)
        {
            return product.Cost >= client.Money;
        }

        private void SellProducts(Product product, Client client)
        {
            if (CheckEnoughCLientMoney(product, client))
            {
                client.RemoveProduct();
            }
            else
            {
                Sell(product, client);
            }
        }
    }

    class Client
    {
        private int _minProducts = 5;
        private int _maxProducts = 15;
        private int _minMoney = 100;
        private int _maxMoney = 500;
        private List<Product> _shoppingList = new List<Product>();
        private List<Product> _purchasedProducts = new List<Product>();

        public int Money { get; private set; }
        public int NumbersOfItemsInBasket { get; private set; }

        public Client(List<Product> products)
        {
            Random random = new Random();
            Money = random.Next(_minMoney, _maxMoney);

            FillBasket(products);

            NumbersOfItemsInBasket = _shoppingList.Count();
        }

        public void RemoveProduct()
        {
            _shoppingList.Remove(TakeRandomProduct());
        }

        public void BuyProduct(Product product)
        {
            _shoppingList.Remove(product);
            _purchasedProducts.Add(product);
            Money -= product.Cost;
        }

        public Product TakeRandomProduct()
        {
            Random random = new Random();
            int randomIndex = random.Next(0, _shoppingList.Count() - 1);
            int index = 0;

            foreach (var product in _shoppingList)
            {
                if (index == randomIndex)
                {
                    return product;
                }

                index++;
            }

            return _shoppingList[0];
        }

        private void FillBasket(List<Product> products)
        {
            Random random = new Random();
            int countOfProducts = random.Next(_minProducts, _maxProducts);

            for (int i = 0; i < countOfProducts; i++)
            {
                _shoppingList.Add(TakeProduct(products));
            }
        }

        private Product TakeProduct(List<Product> products)
        {
            Random random = new Random();
            int firstProduct = 0;
            int lastProduct = products.Count();
            int numberOfProduc = random.Next(firstProduct, lastProduct);

            return products[numberOfProduc];
        }
    }

    class Product
    {
        public string Name { get; private set; }
        public int Cost { get; private set; }

        public Product(string name, int cost)
        {
            Name = name;
            Cost = cost;
        }
    }
}